Prem separtn of placenta w coag defect, unsp, third tri

This code signifies an abruptio placentae occurring in the third trimester, where the placenta detaches from the uterine wall prematurely, and the specific type of coagulation defect is not documented. This condition can lead to significant maternal hemorrhage and fetal distress due to impaired oxygen and nutrient supply.

Apply this code when documentation confirms a premature placental separation in the third trimester, and a coagulation defect is present but not further specified (e.g., DIC, hypofibrinogenemia). Supporting documentation would include physician notes detailing abruptio placentae, evidence of a coagulopathy, and the gestational age.

• Ensure the documentation explicitly states "third trimester" for accurate code assignment.
• If the specific type of coagulation defect is known, a more precise subcategory of O45.0 should be used.
• Always sequence this code as a primary diagnosis when it is the reason for the encounter, followed by codes for any associated complications.